If the slow-twitch muscle fiber of a world-class marathon runner, a weight lifter, and a 100-meter dash Olympian were compared, which would represent the correct order, from highest to lowest, of the percentage of slow-twitch muscle in their bodies?

Question

Quizplus · Accepted Answer

Marathon runners require a high proportion of slow-twitch muscle fibers for endurance, while weightlifters rely more on fast-twitch muscle fibers for explosive strength. Triathletes also require a higher percentage of slow-twitch fibers than weightlifters but not as much as marathon runners. Therefore, the correct order from highest to lowest percentage of slow-twitch muscle fibers in their bodies would be marathon runner, triathlete, weight lifter.

If the Slow-Twitch Muscle Fiber of a World-Class Marathon Runner